When I was a kid in high school, there was nothing I hated more than scUM (and my bitch of an English teacher). And I didn't mind ND; didn't cheer for them yet didn't mind them.
As I have grown older, my hatred for scUM has not diminished one bit, but what I couldn't grasp in my youth was that the intense hatred was built upon respect. I hate everything about that place (colors, fight song, stadium, the grass, etc.), yet I respect them. In my youth, I too had two favorite teams, "OSU and whoever plays scUM", now that I have logged about 42 circuits around the sun, I desire to see an undefeated OSU vs. an undefeated scUM for the whole damn enchilada. Now, my two favorite teams are OSU and whoever plays the holier than thou Domers.
My hatred for ND started to grow around the same time I started at OSU. It seemed that the ND "fans" that I encountered had much to do with it. It seemed that the media lovefest had something to do with it. It grew with the hiring of each new coach (starting with Faust I believe) that produced those goddamned "return to glory" bullshit from folks. It grew more when they got their own little TV deal with NBC (uber media lovefest) and even more with the BCS special ND rules. The hatred reached critical mass when ND turned down an invite to join the Big Ten playing the "it would ruin our independent tradition" bullshit card. (BTW, many Big Ten presidents did not support inviting ND to join the Big Ten since ND's graduate programs are so lowly rated.) All of this amounted to my realization that I do not have respect for ND; as the hatred for them grew, the respect disappeared to where now I have none. Nada! Nil! Zilch! Zippo! The big goose egg! And to seal the deal that ND is my most hated team in all of sports, I had to sit by ND fans when OSU spanked their asses in the 'Shoe. Seeing people pull out their goddamn rosary beads and pray before a ND field goal attempt was the final straw. I hope that their holier than thou, arrogant, perpetually overrated asses get handed to them by scUM this year as well as every other Big Ten team.
So yes, my hatred for ND is greater than my hatred for scUM. While hate and love are two powerful emotions at opposite ends of the spectrum, the only thing that exceeds my hatred for ND, in magnitude, is my love for all things OSU.
Put another way, if I had the power to close one university in the country it would be ND and I would about a nanosecond to do it. If I had that power, closing scUM wouldn't even be a thought because of what I would lose as a born and bred Buckeye.